German scientists contend that two natural cycles will combine to lower global temperatures throughout the 21st Century. The scientists show that there is an approximate 200-year solar cycle, supported by historical temperature data and proxy data from stalagmites in caves. The 200-year solar cycle has just passed its maximum and will decline during the 21st Century. It is at least in part responsible for the warming of the last decades of the 20thCentury. The AMO/PDO cycle is also beginning its cool phase and will reach a minimum in 2035. The scientists conclude that “the global temperature will drop until 2100 to a value corresponding to the “little ice age” of 1870.” --Jonathan DuHamel, Tuscon Citizen, 4 December 2013
